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Internal Medicine Providers in St. Louis, MO

Browse 58 Internal Medicine providers listed in NPPES with a practice address in St. Louis, Missouri.

58 Healthcare Providers

How St. Louis compares with the U.S.

St. Louis has 20 clinicians in Internal Medicine per 100,000 residents, about 45% of the U.S. rate of 44.

That is 58 active clinicians in Internal Medicine with a practice address in St. Louis, for a population of 288,512.

The Missouri rate is 42 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places.

92% of clinicians in Internal Medicine in St. Louis listed in the CMS Medicare file (23 of 25) accept Medicare assignment. That is similar to the Missouri share of 97%.

Only 25 of 58 active clinicians in Internal Medicine in St. Louis appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

28% of clinicians in Internal Medicine in St. Louis listed in the CMS Medicare file (7 of 25) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Missouri share of 21%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in St. Louis, MO

Source: CMS PECOS
PECOS Enrolled Specialists 41 In St. Louis, MO
Part B Lab & Imaging Eligible 43 Diagnostic Referrals
DME Ordering Eligible 43 Durable Medical Equipment
Home Health Agency Referrals 43 HHA Ordering Eligible
Showing 1โ€“20 of 58 providers
With recent CMS data first, then Aโ€“Z

Dr. Leni Abraham , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3635 Vista Avenue, Desloge Tower, 13th Floor, St. Louis, MO 63110
Phone: 3142687992
NPI Identifier 1346686912
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Dr. Akriti Acharya , MD

Internal Medicine

Active NPI Status
Ssm Health St.mary's Hospital, Department Of Internal, Medicine 6420 Clayton Rd, St.louis, MO 63117
Phone: 3147688778
NPI Identifier 1326722455
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Dr. Chau L Chen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
8401 Olive Blvd, St Louis, MO 63132
Phone: 3149973430
NPI Identifier 1760570071
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Dr. Bhavana Choudhary , MD

Internal Medicine

Active NPI Status Telehealth Services Available
621 S New Ballas Rd, Ste 3016 B, St. Louis, MO 63141
Phone: 3142516339
NPI Identifier 1508022401
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Dr. Francis Rafael Contreras , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6420 Clayton Road Department Of Internal Medicine, Ssm St. Mary's Hospital, St. Louis, MO 63117
Phone: 3147688778
NPI Identifier 1659868354
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Dr. John William Davis , MD PHD

Internal Medicine

Active NPI Status
1 Barnes Jewish Hospital Plaza, St. Louis, MO 63110
Phone: 3147473000
NPI Identifier 1306689823
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Dr. Jennifer A Delaney , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
11709 Old Ballas Rd, St Louis, MO 63141
Phone: 3149931200
NPI Identifier 1124194766
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Dr. Nicole M Delsoin Pierre , MD MPH

Internal Medicine

Active NPI Status
5471 Dr Martin Luther King Drive, St Louis, MO 631124265
Phone: 3143675820
NPI Identifier 1639266463
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Dr. Patrick H Durbin , MD

Internal Medicine

Active NPI Status
6901 Chippewa St, St Louis, MO 63109
Phone: 3146447000
NPI Identifier 1023079928
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Dr. Vanessa Eulo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1 Barnes-Jewish Hospital Plaza, St. Louis, MO 63110
Phone: 3143625000
NPI Identifier 1245612704
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Dr. Baolin Fan , MD

Internal Medicine

Active NPI Status
2331 Hampton Avenue, St Louis, MO 631392908
Phone: 3147721441
NPI Identifier 1568568897
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Dr. Joseph H Flaherty , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3660 Vista, St Louis, MO 63110
Phone: 3149778462
NPI Identifier 1710995568
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Dr. John A Flick , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
615 S. New Ballas Road, St Louis, MO 63141
Phone: 3145696000
NPI Identifier 1770782351
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Dr. Kelly D Gage , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3844 S Lindbergh Blvd., Suite 160, St. Louis, MO 63127
Phone: 3146982500
NPI Identifier 1710930219
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Dr. Alex Harris Geyer , MD

Internal Medicine

Active NPI Status
1 Barnes Jewish Plaza, St. Louis, MO 631101003
Phone: 3147473000
NPI Identifier 1659113900
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Active NPI Status Accepts Medicare Assignment
Ssm Health St. Mary's Hospital - St Louis., 6420 Clayton Road., St. Louis, MO 63117
Phone: 3147688778
NPI Identifier 1497252084
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Dr. Laila G Hanna , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
5471 Dr Martin Luther King Drive, St Louis, MO 631124265
Phone: 3143675820
NPI Identifier 1336157692
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Dr. Rick G Hummel , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
11155 Dunn Rd, Suite 201n, St Louis, MO 63136
Phone: 3147411400
NPI Identifier 1609955483
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Dr. Alan Jose , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6420 Clayton Road, Ssm St Marys Health Center/ Dept Of Internal Medicine, St Louis, MO 631171872
Phone: 3147688778
NPI Identifier 1902110240
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Dr. Alexandra Bahar Khodadadi , MD, MSPH

Internal Medicine

Active NPI Status
1 Barnes Jewish Hospital Plz, St. Louis, MO 63110
Phone: 3143625000
NPI Identifier 1114543832
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Frequently Asked Questions about Internal Medicine in St. Louis

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Missouri licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.